Doesn't work with springboot project

i tried this maven plugin using spring pet client project here :

https://github.com/spring-projects/spring-petclinic

using this config :

<plugin>
   <groupId>com.iluwatar.urm</groupId>
   <artifactId>urm-maven-plugin</artifactId>
   <version>2.0.0</version>
   <configuration>
      <packages>
         <param>org.springframework.samples.petclinic.owner</param>
      </packages>
      <includeMainDirectory>true</includeMainDirectory>
   </configuration>
   <executions>
      <execution>
         <phase>process-classes</phase>
         <goals>
            <goal>map</goal>
         </goals>
      </execution>
   </executions>
</plugin>

uml output is only

@startuml @enduml

run it with java 11 openjdk. is there any missing config of mine ?

[steven-ponessa]

Sam here. Just tried the CLI and only received:

@startuml
@enduml

Was going to try the maven plugin but then found this issue.

[iluwatar]

@klingen-m feel free to submit pull request, no write access needed